1cupextra strong coffee or espressohot, but not boiling
⅓cupdulce de leche
Scoop the dulce de leche into the coffee and stir until thoroughly combined and all the dulce de leche is melted. Taste the mixture to make sure it is to your liking. Place in the refrigerator to cool completely.
Pour into molds, as per the instructions for the Zoku, and wait up to 10 minutes to freeze (or just simply pour into plain old popsicle molds and freeze overnight).